The PRO Spoke Wrench is designed for tightening and loosening spoke nipples when building or truing a wheel. They are available in four sizes. Designed to provide you with a better sports’ bicycle experience the PRO Spoke Wrench was developed for building and truing wheels. Available in four sizes – 3.6-millimetres (PRTLB043), 3.75-millimetres (PRTLB044), 4.0-millimetres (PRTLB045) and 4.4-millimetres (PRTLB046) – the PRO Spoke Wrenches alloy you to tighten or loosen spoke nipples. They feature a steel construction and are covered by a plastic grip.